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JOSEPH BANreAN, Or WOONSOOKET, RHODE rsLAND, vAssIeNOR TO THE wOONsOOKjE'r RUBBER COMPANY.

Leners Pantin. 94,273, dazed August 31, isco.'

The Schedule referred td in these Letters Patent and making part of the same- -To all whom it may concern Be it known that I, JOSEPH BANIGAN, of Woonsocket, in the county ofProvidenee, and in the State' of Rhode Island, have invented a new and improved Process for Pressing and Vulcanizing India Rubber; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being'had to the accompanying drawings, and to the letters of ref-- erence marked thereon, which make part of this specification, and in which- Figure 1 represents a front view of my improved vulcanizing-press, the door and its' flange being'removed, to show the construction more clearly, and

Figure 2, a side view of the same, the interior construction being shown in'dotted lines.

The object of my invention is to provide a simple and convenient appara-tus for pressing and vulcanizin g rubber goods, Sto.; and to this end,

My improvements consist--V First, in arranging two or more plates or moulds ina heater, the upper one of which is attached to and' operated by a screwed spindle passing through a shipping-box in the same.

Second, in forming the nut in which this screwed spindle works in a yoke, which yoke is connected, by two bolts, with another upon the bottom of the heater, so as to relieve the same from any pressure except that of the strain withinit.

Third, in `a crane and swivel for removing and ref placing the door of the heater.

Fourth, in a device for causing the spindle to be rotated in only one direction when the press is in operation.

In the accompanying drawings- A represents a metal heater, for securing the articles to be vulcanized, which receives a supply ot' steam by the pipes b b attached to its bottom, and rests upon feet a2 a2;

The heater contains two or more plates or moulds, B B', of suitable form, between' which the articles to be vulcanized are placed.

The upper plate B' is attac/hed to a spindle, E, which passes through a shifting-box, A, on the top of the heater, in such manner as to partake ofthe vertical butl not of the rotary motion of the spindle. n

This spindle has a substantial thread cut upon the upper portion of its length, which works in a nut formed in a yoke, C', abovethe heater.

Through openings in each end of this yoke pass the bolts D D, which extend downward through the lugs a a, on the sides of the heater, and are secured to a yoke, C, upon the bottom thereof.

The height of the yoke C', above the top of the heater, can be regulated by the nuts, d d'.

lBy this arrangement it will be seen that the yokes sustain the pressure when the spindle is screwed down, leaving the heater A to bear only the pressure of the steam.

To bring the required pressure upon the articles to be vulcanized, the spindle E 4is rotated by means of the lever E2, which causes the plate B to be moved down toward B.

The lever E? is inserted .in a hole in the collar ef, i `whichis loose upon the spindle E, immediately above a collar el, which is firmly secured thereon.

Through Openings in the two collars, a clip or catch, c, passes,'extending intov the collar el a sufficient disltance to form a fastening.

This clip is bevelled `upon its lower end in such manner that when the lever E2 is turned in proper direction for screwing down the plate B', it holds the collar c2 fast upon the spindle, and causes a movement of rota-tion to be imparted thereto.

v.Yilheu the lever E is turned in the opposite direction, the inclination ofthe lower cud of the clip e causes it to be dra-wu out of the collar c, and the collar e and lever E2 then cease to give rotary motion to the spindle.

The spindle is run up when the pressure is to bc taken o, by means of the hand-wheel El, or,if found more convenient, this wheel may likewise ber used for giving the downward movement, in lieu of the lever El.

The heater is provided with a ange, (il, around its front, to which the door A2 is securedA by bolts and nuts, and the joint made tight in a proper manner.

A crane, F, is pivoted to the yoke G and the top of the heater A, on which a swivel, j, moves, which is provided with a hook to which the door A2 can 'be attached, and which can be raised or lowered by the screw f.

A roller is attached to the swivel,'in such a manner as to run on the top 'of the crane, for the purpose of facilitating the removal and closing of the door.l

G represents a rubber cylinder which is to be vulcanized.

The operationgof the press is as follows:

The article to bc vulcanized being placed upon thef plate B', the door A2 is secured in position and made properly steam-tight.

The spindle E is then screwed down until the plate B exerts sucicnt pressure upon the articles to be vulcanized, and steam being admitted by the pipes b b, the parts are allowed to remain in this position unt-il the operation is concluded.

The steam is then shut otl, and the crane F being swung around to the front, the hook ou thc swivel f is inserted intoa lug at the top ofthe door A2.

The nuts which secure the door to the flange a' are then removed, and the door drawn out 'sufiiciently to clear the bolts in the ange, when the crane, being swung round, withdraws it from the opening, and the spindle E being run up by the wheel El, the articles are removed from the interior of the heater A.

- Moulds may be substituted for the plates B B', if convenience require it.

The male part of the mould could be attached to the spindle E, which, when screwed down, would press it into the female part, resting upon the bottom ofthe heater.

In the case of a heavy mould, this would be found to be a decided advantage.

Having described my invention,

That I claim as new, and desire to secure by Letters Patent, is-

1. Using two or more moulds or plates iu a steamtight heater, operated from the outside thereof, substantiallv as described.

` hereunto signed my name, this 4th day of April, 1868.

JOSEPH BA'NIGAN.

W it-nesses F. M. PERKINS, OHAs. E. BALLoU. 

